| 1 | #ifndef __ASM_GENERIC_MSGBUF_H
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| 2 | #define __ASM_GENERIC_MSGBUF_H
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| 3 |
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| 4 | #include <asm/bitsperlong.h>
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| 5 | |
| 6 | * generic msqid64_ds structure.
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| 7 | *
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| 8 | * Note extra padding because this structure is passed back and forth
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| 9 | * between kernel and user space.
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| 10 | *
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| 11 | * msqid64_ds was originally meant to be architecture specific, but
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| 12 | * everyone just ended up making identical copies without specific
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| 13 | * optimizations, so we may just as well all use the same one.
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| 14 | *
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| 15 | * 64 bit architectures typically define a 64 bit __kernel_time_t,
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| 16 | * so they do not need the first three padding words.
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| 17 | * On big-endian systems, the padding is in the wrong place.
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| 18 | *
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| 19 | * Pad space is left for:
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| 20 | * - 64-bit time_t to solve y2038 problem
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| 21 | * - 2 miscellaneous 32-bit values
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| 22 |
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| 23 |
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| 24 | struct msqid64_ds {
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| 25 | struct ipc64_perm msg_perm;
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| 26 | __kernel_time_t msg_stime;
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| 27 | #if __BITS_PER_LONG != 64
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| 28 | unsigned long __unused1;
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| 29 | #endif
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| 30 | __kernel_time_t msg_rtime;
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| 31 | #if __BITS_PER_LONG != 64
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| 32 | unsigned long __unused2;
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| 33 | #endif
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| 34 | __kernel_time_t msg_ctime;
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| 35 | #if __BITS_PER_LONG != 64
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| 36 | unsigned long __unused3;
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| 37 | #endif
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| 38 | unsigned long msg_cbytes;
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| 39 | unsigned long msg_qnum;
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| 40 | unsigned long msg_qbytes;
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| 41 | __kernel_pid_t msg_lspid;
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| 42 | __kernel_pid_t msg_lrpid;
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| 43 | unsigned long __unused4;
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| 44 | unsigned long __unused5;
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| 45 | };
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| 46 |
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| 47 | #endif
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